vi Preface 



the McGill Medical Library and University of Lund Medical 

 Library, as well as by our secretaries, Miss Ann Waters, Mrs. Elsa 

 Kaunat and Miss Ursula Delfs. 



We are grateful to the Acta Physiologica Scandinavica, Alcan et 

 Cie, American Journal of Physiology , Archives of Neurology and 

 Psychiatry, British Journal of Pharmacology and Chemother apeutics, 

 British Medical Bulletin, Canadian Journal of Biochemistry and 

 Physiology, Helvetica Medica Acta, Journal of Biophysical and Bio- 

 chemical Cytology, Journal of Cellular and Comparative Physiology, 

 Journal of Histochemistry, Journal of Neurophysiology, Journal of 

 Physiology, Quarterly Journal of Experimental Physiology, Revue 

 Canadienne de Biologie, and Springer- Verlag and the authors of the 

 articles, for permission to reproduce illustrations which originally 

 appeared in these Journals. One of us (A. S. V. B.) wishes to 

 express his gratitude to the Associate Committees on Dental and 

 Medical Research of the National Research Council of Canada for 

 generous grants in support of his work in salivary secretion over 

 the past six years. 



Chapters I, II, VIII, IX, X, XI and XIV were written by 

 A. S. V. B., and Chapters III, IV, V, VI, VII, XII and XIII by 

 N. G. E. 



